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ADM1232ARWZ-REEL1 Arkusz danych(PDF) 5 Page - Analog Devices |
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ADM1232ARWZ-REEL1 Arkusz danych(HTML) 5 Page - Analog Devices |
5 / 12 page ADM1232 Rev. C | Page 5 of 12 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS NC 1 PB RESET 2 NC 3 TD 4 NC 16 VCC 15 NC 14 STROBE 13 NC 5 NC 12 TOLERANCE 6 RESET 11 NC 7 NC 10 GND 8 RESET 9 NC = NO CONNECT ADM1232 TOP VIEW (Not to Scale) ADM1232 TOP VIEW (Not to Scale) Figure 3. RW-16 Pin Configuration PB RESET 1 VCC 8 TD 2 STROBE 7 TOLERANCE 3 RESET 6 GND 4 RESET 5 Figure 4. RM-8 Pin Configuration PB RESET 1 TD 2 TOLERANCE 3 GND 4 VCC 8 STROBE 7 RESET 6 ADM1232 TOP VIEW (Not to Scale) RESET 5 Figure 5. N-8 and R-8 Pin Configuration Table 4. Pin Function Descriptions Pin No. Mnemonic Description RW-16 N-8, R-8, RM-8 1, 3, 5, 7, 10, 12, 14, 16 NC No Connection. 2 1 PB RESET Push-Button Reset Input. This debounced input ignores pulses of less than 1 ms and is guaranteed to respond to pulses greater than 20 ms. 4 2 TD Time Delay Set. This input allows the user to select the maximum amount of time that the ADM1232 allows the STROBE input to remain inactive—that is, STROBE is not receiving any high-to-low transitions—without forcing the ADM1232 to generate a RESET pulse. See the section, , and the Specifications Figure 8 STROBE Timeout Selection section. 6 3 TOLERANCE Tolerance Input. This input determines how much the supply voltage is allowed to decrease (as a percentage) before a RESET is asserted. Connect this pin to VCC for 10% and to GND for 5%. 8 4 GND 0 V Ground Reference for All Signals. 9 5 RESET Active High Logic Output. This pin is asserted when any of the following events occurs: VCC decreases below the amount specified by the TOLERANCE input; when PB RESET is forced low; if there are no high-to-low transitions within the limits set by TD at STROBE; and during power-up. 11 6 RESET Inverse of RESET. This pin has an open-drain output. 13 7 STROBE The STROBE input is used to monitor the activity of a microprocessor. If there are no high-to-low transitions within the time specified by TD, a reset is asserted. 15 8 VCC Power Supply Input, 5 V. |
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